The electron transport chain occurs in:

Correct answer: A. Inner membrane of mitochondria

  • A. Inner membrane of mitochondria
  • B. Outer membrane of mitochondria
  • C. Thylakoid membrane
  • D. Both A and C

Explanation

The electron transport chain is located in the inner mitochondrial membrane. The inner membrane is highly folded to form structures called cristae, providing a large surface area for the enzymes and protein complexes involved in oxidative phosphorylation.

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